Local contrast enhancement and adaptive feature extraction for illumination-invariant face recognition.
Wen-Chung KaoMing-Chai HsuYueh-Yiing YangPublished in: Pattern Recognit. (2010)
Keyphrases
- contrast enhancement
- illumination invariant face recognition
- feature extraction
- image enhancement
- color restoration
- face recognition
- multiscale
- gray level
- image processing
- histogram equalization
- color images
- low contrast
- transfer function
- feature vectors
- visual quality
- wavelet transform
- pattern recognition
- unsharp masking
- image contrast enhancement
- input image
- texture analysis
- gabor filters
- enhanced image
- lighting conditions
- facial expressions
- principal component analysis
- low level
- high resolution
- tone mapping
- image contrast
- texture features
- feature selection
- image analysis
- sparse representation